Safety concerns that led to the US Food and Drug Administration placing a partial clinical hold on some trials of TG Therapeutics, Inc. PI3K-delta inhibitor Ukoniq (umbralisib) are looking potentially more serious as the FDA is now also looking into the overall safety-efficacy profile of Ukoniq for its marketed indications, follicular lymphoma (FL) and marginal zone lymphoma (MZL).
TG had initially disclosed on 27 January that the FDA placed a partial clinical hold on studies of Ukoniq combined...